DE69127135D1 - Arrangement for processing image signals - Google Patents

Arrangement for processing image signals

Info

Publication number
DE69127135D1
DE69127135D1 DE69127135T DE69127135T DE69127135D1 DE 69127135 D1 DE69127135 D1 DE 69127135D1 DE 69127135 T DE69127135 T DE 69127135T DE 69127135 T DE69127135 T DE 69127135T DE 69127135 D1 DE69127135 D1 DE 69127135D1
Authority
DE
Germany
Prior art keywords
arrangement
image signals
processing image
processing
signals
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
DE69127135T
Other languages
German (de)
Other versions
DE69127135T2 (en
Inventor
Kazuya Masuda
Kouji Yamaji
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sharp Corp
Original Assignee
Sharp Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sharp Corp filed Critical Sharp Corp
Publication of DE69127135D1 publication Critical patent/DE69127135D1/en
Application granted granted Critical
Publication of DE69127135T2 publication Critical patent/DE69127135T2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T5/00—Image enhancement or restoration
    • G06T5/20—Image enhancement or restoration using local operators

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Image Input (AREA)
  • Facsimile Scanning Arrangements (AREA)
DE69127135T 1990-05-30 1991-05-28 Arrangement for processing image signals Expired - Fee Related DE69127135T2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2142126A JP2610696B2 (en) 1990-05-30 1990-05-30 Image signal processing device

Publications (2)

Publication Number Publication Date
DE69127135D1 true DE69127135D1 (en) 1997-09-11
DE69127135T2 DE69127135T2 (en) 1998-02-12

Family

ID=15307990

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69127135T Expired - Fee Related DE69127135T2 (en) 1990-05-30 1991-05-28 Arrangement for processing image signals

Country Status (4)

Country Link
US (1) US5297221A (en)
EP (1) EP0459389B1 (en)
JP (1) JP2610696B2 (en)
DE (1) DE69127135T2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5647010A (en) * 1993-09-14 1997-07-08 Ricoh Company, Ltd. Image forming apparatus with security feature which prevents copying of specific types of documents
US5901243A (en) * 1996-09-30 1999-05-04 Hewlett-Packard Company Dynamic exposure control in single-scan digital input devices
US20020146171A1 (en) * 2000-10-01 2002-10-10 Applied Science Fiction, Inc. Method, apparatus and system for black segment detection
JP6361111B2 (en) 2013-10-31 2018-07-25 株式会社Ｊｖｃケンウッド Image processing apparatus, image processing method, and projection apparatus

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4554593A (en) * 1981-01-02 1985-11-19 International Business Machines Corporation Universal thresholder/discriminator
JPS5810963A (en) * 1981-07-14 1983-01-21 Ricoh Co Ltd Picture compensation processing method
US4525747A (en) * 1981-08-06 1985-06-25 Toshiyuki Sakai Analog-to-digital image signal conversion
JPS5954376A (en) * 1982-09-21 1984-03-29 Konishiroku Photo Ind Co Ltd Picture processing method
US4709274A (en) * 1983-08-29 1987-11-24 Canon Kabushiki Kaisha Image processing apparatus
JPS60236580A (en) * 1984-05-10 1985-11-25 Fuji Xerox Co Ltd Picture processor
US4760541A (en) * 1986-01-29 1988-07-26 General Electric Company Two dimensional digital spatial filter for enhancement of point sources
US4761819A (en) * 1987-02-27 1988-08-02 Picker International, Inc. Adaptive noise reduction filter for reconstructed images
JP2575476B2 (en) * 1988-10-20 1997-01-22 富士写真フイルム株式会社 Image signal processing method and apparatus
WO1990007751A1 (en) * 1988-12-27 1990-07-12 Eastman Kodak Company Unsharp masking using center weighted local variance for image sharpening and noise suppression

Also Published As

Publication number Publication date
US5297221A (en) 1994-03-22
EP0459389A3 (en) 1992-12-30
JP2610696B2 (en) 1997-05-14
EP0459389B1 (en) 1997-08-06
DE69127135T2 (en) 1998-02-12
EP0459389A2 (en) 1991-12-04
JPH0435466A (en) 1992-02-06

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee